JPH06146042A - Cleaning device - Google Patents

Abstract

PURPOSE:To provide the cleaning device which is free from the possibility that oily dirt resticks on a metallic component after cleaning when the metallic component on which the oily dirt sticks is cleaned. CONSTITUTION:The surface of cleaning liquid 2 after cleaning is swept with a movable plate 3 to gather the oily dirt 4, floating on the surface of the cleaning liquid 2 to one side wall. The surface of the cleaning liquid is wiped with an oil absorptive material to absorb and remove the oily dirt floating on the surface of the cleaning liquid. Thus, the oily dirt 4 floating on the surface of the liquid after cleaning is removed. Consequently, the metallic component is taken out of the invariably clear cleaning surface after being cleaned and the oily dirt 4 floating on the surface of the cleaning liquid 2 never resticks on the component after cleaning, so that the cleansed component is obtained.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cleaning device for metal parts and the like, and more particularly to a cleaning device for preventing reattachment of oily dirt when cleaning oily dirt with a detergent containing a surfactant.

[0002]

2. Description of the Related Art Most conventional metal part cleaning methods have been batch cleaning in which a cleaning liquid and a metal part to be cleaned are placed in a cleaning tank.
At this time, when a solvent that can dissolve oily stains adhering to the metal parts, such as 1.1.1-trichloroethane, is used as the cleaning liquid, the oily stains are dissolved and removed in the solvent. . Therefore, if the metal component is lifted from the cleaning liquid after the cleaning and then an appropriate rinsing is performed to remove the solvent remaining on the surface of the metal component, there is almost no possibility that oily stains will reattach to the metal component.

Further, as a cleaning device for preventing re-adhesion, as described in JP-A-63-263728, a small hole is provided on the side wall of the cleaning tank, and floating floating in the cleaning tank through this small hole. Some devices have been devised to discharge the particles and thereby prevent the suspended particles from reattaching to the object to be cleaned.

[0004]

However, in recent years 1.1.
Since the use of chlorine-based solvents such as 1-trichloroethane as a causative substance that destroys the ozone layer has been prohibited, a cleaning method using a surfactant or the like as an alternative cleaning agent is generally used. It was Surfactants, unlike solvents, do not dissolve oily stains,
Wrap it and remove it (this is called roll-up) and remove it. The oil removed from the metal parts has a lower specific gravity than the cleaning liquid, and therefore does not stay in the cleaning liquid and floats on the surface. Therefore, a large amount of oily dirt attached to the metal parts floats on the surface of the liquid after cleaning, and when pulling up the metal part after cleaning from the cleaning liquid, there is a risk that these oily dirt will re-attach to the metal parts. there were.

Further, since the removed oily dirt is floating on the surface of the cleaning liquid, it is impossible to discharge it through the small holes provided on the side wall of the tank.

[0006] An object of the present invention is to provide a cleaning device in which, when cleaning a metal part to which oily dirt is attached, oily dirt that has been once removed does not reattach to the metal part after cleaning.

[0007]

The above object is achieved by promptly removing floating oily stains from the surface of a liquid, before taking out a metal part that has been cleaned from the cleaning liquid.

[0008]

A movable plate is provided on the upper part of the cleaning tank, and after cleaning, the movable plate is moved from one inner wall of the cleaning tank to the opposite inner wall. As a result, the oily stains floating on the surface of the cleaning liquid are collected on one side wall of the cleaning tank by the movable plate, and the cleaning liquid surface after the movable plate is moved is cleaned by removing the oily stains. If the metal part is pulled up from here, reattachment of oily dirt is prevented.

Further, an oil absorbing substance is placed on the upper part of the cleaning tank. After the cleaning is completed, the surface of the cleaning liquid is wiped with the oil absorbing substance. Then, the oily dirt floating on the surface of the cleaning liquid is absorbed by the oil absorbing substance and removed from the surface of the cleaning liquid. As a result, the surface of the cleaning liquid becomes clean, and reattachment of oily dirt is prevented when the metal part is pulled up.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of the cleaning apparatus according to the present invention will be described below with reference to FIG.

In FIG. 1, a cleaning tank 1 is filled with a cleaning agent 2 containing a surfactant. A movable plate 3 is provided on one of the inner walls of the cleaning tank. The movable plate 3 has a part thereof immersed in the cleaning liquid, and the remaining part is in the vapor phase. Before and during cleaning, the movable plate 3 is located in contact with the inner wall of the cleaning tank.

A metal part (not shown), which is an object to be cleaned and is attached with oily dirt, is put into the cleaning liquid 2 to perform cleaning. After the cleaning, oily dirt 4 separated from the metal parts floats on the surface of the cleaning liquid 2. Therefore, for example, the handle 5 is used to gently move the movable plate 3 from one inner wall which was in contact with the cleaning plate during cleaning to the inner wall on the opposite side.

The process from before cleaning to after taking out the metal parts from the cleaning process will be described with reference to FIG.

(A) Into the cleaning liquid 2 put in the cleaning tank 1, a metal part 6 having oily stains is put. At this time, the movable plate 3 is located in contact with one inner wall of the cleaning tank 1.

(B) Subsequently, cleaning is performed. After the cleaning is completed, the surface of the cleaning liquid 2 has oily stains 4 attached to the metal parts 6.
Is floating.

(C) The movable plate 3 is gently moved to the inner wall on the opposite side.

(D) The oily dirt 4 is held by being sandwiched between the movable plate 3 and the inner wall of the cleaning tank 1. As a result, metal parts 6
Are taken out from the surface of the cleaning liquid in the portion cleaned by the movable plate 3.

When cleaning the next part, the movable plate 3 is returned to the state of (a), the part to be cleaned is inserted, and (b), (c) and (d) are repeated.

Further, as shown in FIG. 3, one of the side walls of the cleaning tank is made equal to the height of the cleaning liquid to form an overflow structure, and the oily dirt 4 collected by the movable plate 3 is discharged from the overflow structure portion to the outside of the cleaning tank. With the structure in which the movable plate 3 is returned to the position before cleaning, the oily dirt 4 does not float again on the surface of the cleaning liquid, and the cleaning liquid 2 is always kept clean.

Another method for removing oily stains from the surface of the cleaning liquid will be described with reference to FIG.

An oil absorbing substance 7 is provided on the upper portion of the cleaning tank 1.
For example, the oil absorbing substance 7 is a band-shaped substance having a width equal to the inner wall of the cleaning tank 1. After the cleaning is completed, the strip-shaped oil-absorbing substance 7 is rotated in one direction little by little, and the surface of the liquid after cleaning is scanned from one inner wall of the cleaning tank to the inner wall on the opposite side to be wiped. As a result, the oily dirt 4 floating on the surface of the cleaning liquid is absorbed and removed by the oil absorbing substance 7. The reason why the strip-shaped oil-absorbent substance 7 is wiped while being rotated and moved little by little in one direction is to wipe the surface of the cleaning liquid with a clean surface at all times and to obtain a sufficient oil absorbing power.

Of course, the oil-absorbing substance 7 does not have to be in the shape of an elongated strip, and may have any shape such as a plate, a square or a cloth so long as it can come into contact with the surface of the cleaning liquid. Also, the method of wiping the surface of the cleaning liquid may be a method of covering the entire surface of the cleaning liquid without scanning the surface of the cleaning liquid, as long as the oily dirt floating on the surface of the cleaning liquid comes into contact with and is absorbed by the oil absorbing substance.

Further, in FIG. 2, the movable plate 3 and the cleaning tank 1 are
It is also an effective method to keep the cleaning liquid clean by adsorbing and removing the oily dirt sandwiched between the inner walls of the oil with an oil absorbing substance.

In addition, according to the present invention, if the oily soil can be removed from the cleaning liquid by using the overflow structure or the oil-absorbing substance, the concentration of the oily soil in the cleaning liquid is low and the cleaning liquid can be kept clean for a long time. In addition, since oily dirt does not adhere to the metal parts, which are the objects to be cleaned, and are not taken out from the cleaning tank, the amount of oily dirt to be carried into the subsequent washing step is small, and the load of the washing drainage can be reduced.

Another embodiment according to the present invention will be described with reference to FIG.

In FIG. 5, the cleaning tank 1 is divided into two parts by a movable plate 3. Put the metal part 6 with oily stains in one cleaning tank (the tank on the left side in FIG. 5A),
Perform cleaning. After cleaning, the movable plate 3 is raised and the metal part 6 is not used for cleaning the tank (the tank on the right side in FIG. 5B).
Move to. After moving the metal component 6, the movable plate 3 is lowered to its original position. After that, the metal part 6 is taken out from the cleaning tank. Oily dirt floats on the liquid surface of the tank used for cleaning. However, since the liquid surface of the tank on the side not used for cleaning is clean, even if the metal part 6 is taken out, there is no risk that oily dirt will reattach. Further, when the movable plate 3 is raised, a part of the movable plate 3 remains in the cleaning liquid. If all the movable plate 3 is pulled out from the cleaning liquid, oily stains on the surface of the cleaning liquid are mixed together, and a clean liquid surface cannot be obtained.

In FIG. 5, even if the fixed plate 8 is provided in advance near the liquid surface of the cleaning liquid 2 partitioned by the movable plate 3 and the movable plate 3 is completely withdrawn from the cleaning liquid, the cleaning liquid surfaces do not mix. It is more desirable to have such a structure.

[0028]

According to the present invention, since the metal parts after cleaning are always taken out from the clean cleaning liquid surface, the oily stains which are separated from the parts by the cleaning with the surfactant and are floating on the surface of the cleaning liquid. However, it does not reattach to the cleaned parts and become contaminated. As a result, it is possible to obtain clean parts.

[Brief description of drawings]

FIG. 1 is a diagram of a cleaning apparatus showing an embodiment of the present invention.

FIG. 2 is a diagram showing an example of an operating state of the cleaning apparatus according to the present invention.

FIG. 3 is a diagram showing another example of the operating state of the cleaning apparatus according to the present invention.

FIG. 4 is a diagram of a cleaning apparatus showing another embodiment of the present invention.

FIG. 5 is a cleaning device diagram showing another embodiment of the present invention.

[Explanation of symbols]

1 ... cleaning tank, 2 ... cleaning liquid, 3 ... movable plate, 4 ... oily stain,
5 ... Handle, 6 ... Metal parts, 7 ... Oil absorbing substance, 8 ... Fixing plate.

Claims (4)

[Claims] 1. A cleaning device for removing oily dirt attached to metal parts or the like, and a cleaning solution containing a surfactant, a cleaning tank for containing this cleaning solution, and oily dirt floating on the surface of the solution after cleaning. A cleaning device characterized by having functions. 2. The cleaning apparatus according to claim 1, wherein a movable plate is provided above the cleaning tank, and a part of the movable plate is immersed in the cleaning liquid to sweep the surface of the cleaning liquid. 3. The cleaning apparatus according to claim 1, wherein an oil absorbing substance is provided on an upper portion of the cleaning tank, and the oil absorbing substance wipes the surface of the cleaning liquid. 4. A cleaning device comprising a cleaning liquid containing a surfactant and a cleaning tank having a structure divided into two parts by a movable plate for containing the cleaning liquid, wherein an oily stain adhered to a metal part or the like on one side of the cleaning tank. A cleaning device having a structure in which the cleaning is performed, and after cleaning, the movable plate is moved to take out components from the other tank that has not been cleaned.